Part 5

When Bole (Sci. Publ. Cleveland Mus. Nat. Hist., 5(2):6, December 4, 1937) named and described Perognathus longimembris salinensis, he listed as comparative material of P. l. bangsi, a specimen in the Museum of Comparative Zoology from Parker, Yuma Co., Arizona. There was some reason to doubt the identification of the specimen since it is the only record of occurrence of the subspecies from east of the Colorado River. There is no specimen of Perognathus longimembris from Arizona in the Museum of Comparative Zoology. There is one specimen of pocket mouse (18213, a skin only) from 30 miles east of Parker. We think that this is the specimen seen by Bole because at one time according to the label, it had been identified as Perognathus panamintinus [= longimembris] bangsi. If the identification of this skin-only had been made by means of Osgood's key (N. Amer. Fauna, 18:14-15, September 20, 1900), the animal would have "keyed out" to P. longimembris because the total length is recorded on the label as 130. Seth B. Benson has subsequently examined the specimen. The label now bears in handwriting the name of P. amplus pergracilis and is followed by Benson's initials as the identifier. Although we lack adequate comparative material, we consider the specimen to be P. amplus pergracilis Goldman, because the skin answers well to the description of P. a. pergracilis and because of the name currently on the label with Benson's initials.

~Perognathus longimembris panamintinus~ Merriam

In the current literature, Californian specimens of the little pocket mouse stand identified as Perognathus longimembris nevadensis from Oasis and vicinity of Benton Station (Grinnell, Univ. California Publ. Zool., 40:147, September 26, 1933). When one of us (Hall, Mammals of Nevada, p. 360, July 1, 1946) reported specimens from southwestern Nevada as Perognathus longimembris panamintinus he did so on the basis of study of specimens which included those from Oasis (in the California Museum of Vertebrate Zoology) that he at that time (in ms.) identified as P. l. panamintinus. Those specimens from Oasis have the hair on the underparts white all the way to the base as also do specimens from Morans, 5000 ft. (29583/41638 BS), in contrast to the plumbeous underparts of P. l. nevadensis. It is on this basis that we identify specimens from the places mentioned above as Perognathus longimembris panamintinus. "Vicinity of Benton Station" as given by Grinnell (loc. cit.) is interpreted to include Morans, Mono County.

~Dipodomys agilis martirensis~ Huey

Elliot (Field Columb. Mus., Zool. Ser., Publ. 79, 3(12):221, August 15, 1903) referred specimens from Rosarito and Rosarito Divide, San Pedro Martir Mts., Baja California, to Perodipus [= Dipodomys] agilis. According to the currently known distribution of Dipodomys agilis in Baja California (see Huey, Trans. San Diego Soc. Nat. Hist., 11:237, April 30, 1951), the specimens seemed likely to belong to the subspecies D. a. martirensis. An examination of the specimens (10644, 10690-10693 CMNH from Rosarito, and 10694 from Rosarito Divide) shows that, on the basis of large ear and comparatively narrow braincase, they are in fact referable to D. a. martirensis. Only No. 10693, with its broader braincase, seems atypical. Comparative materials used are in the Chicago Natural History Museum as follows: D. a. martirensis: Baja California: San Matias Spring, 2. D. a. simulans: Baja California: Ensenada, 8. California: Dulzura, 1 (topotype); San Luis del Rey, 3.

~Dipodomys agilis simulans~ (Merriam)

J. A. Allen (Bull. Amer. Mus. Nat. Hist., 5:184, August 18, 1893) listed as Perodipus agilis a specimen (6306/4941 AMNH) from Valladares, Baja California. Subspecies of this species were subsequently named without mentioning this specimen that, on geographic grounds, might be either D. a. martirensis or D. a. simulans. Certain measurements of the specimen are as follows: Total length, 288; length of tail, 171; length of hind foot (dry), 41.0; greatest length of skull, 39.5; width of maxillary arch at middle, 4.5. The long tail and wide (4.5) maxillary arch are characteristic of Dipodomys agilis simulans and constitute the basis for identifying the specimen as of that subspecies.

~Baiomys taylori analogus~ Osgood

The geographic range currently assigned to Baiomys taylori paulus (J. A. Allen) is separated in two parts by the geographic range assigned to B. t. analogus. The southern, separated part of the range of B. t. paulus rests wholly on ten specimens from Colima, Colima, identified as B. t. paulus by Osgood in his "Revision of the mice of the American genus Peromyscus" (N. Amer. Fauna, 28, April 17, 1909) where (p. 255) he places as a synonym of Peromyscus taylori paulus J. A. Allen, 1903, Peromyscus allex Osgood, 1904. The later name was based on these ten specimens (33422/45445-33427/45450, 33429/45452, 33432/45455, and 33435/45458 BS) from Colima. Osgood had a choice of synonymizing P. allex under P. paulus or P. t. analogus. According to Osgood's concept, analogus was blackish and large; allex was grayish and small; and paulus was fawn colored and intermediate in size. The more nearly equal size of paulus and allex probably influenced Osgood in making his choice. After examining the original materials we think there is more to recommend the alternate choice. For example, two topotypes of equal age of the same sex of allex (33424/45447) and analogus (120264 BS) are of almost the same size and, respectively, measure as follows: Total length, 107, 108; length of tail, 42, 45; length of hind foot (measured dry), 13.1, 12.8; greatest length of skull, 17.6, 17.7; zygomatic breadth, 9.3, 9.2. Although analogus does average darker, a topotype, No. 120267 BS, from Zamora, is indistinguishable from several of the topotypes of allex. Consequently, we arrange Peromyscus allex Osgood as a synonym of Baiomys taylori analogus (Osgood) 1909 and refer the specimens from Colima to the latter.

~Peromyscus eremicus eremicus~ (Baird)

Osgood (N. Amer. Fauna, 28:242, April 17, 1909) listed a specimen of this subspecies from Sierra Encarnacion, Nuevo Leon. A specimen, No. 79614 BS, of this species was obtained on July 31, 1896, at Sierra Encarnacion, Coahuila, by Nelson and Goldman. We know of no specimens of this subspecies from Sierra Encarnacion, Nuevo Leon, and assume that Osgood referred to the Coahuilan specimen. Further support for this assumption is Osgood's (loc. cit.) note that the Sierra Encarnacion specimen is aberrant and, to our eye, so is No. 79614 from Coahuila.

~Peromyscus merriami merriami~ Mearns

Osgood (N. Amer. Fauna, 28:239, April 17, 1909) placed P. merriami in synonymy under Peromyscus eremicus eremicus (Baird). Because Seth B. Benson, and subsequently the late Wilfred H. Osgood, told one of us (Hall) that Peromyscus merriami was specifically distinct from Peromyscus eremicus eremicus, we have examined the specimens from Sonoyta, Sonora, and Quitobaquita, Arizona, referred by Mearns (Bull. U. S. Nat. Mus., 56:434-435, and 444, April 13, 1907) to P. e. eremicus and P. merriami, respectively. We perceive the differences that Mearns (loc. cit.) described and recognize P. merriami as a species separate from P. eremicus.

Also we have compared the type and one topotype of Peromyscus goldmani Osgood with the holotype and referred specimens mentioned above, of P. merriami, and feel that the two kinds are no more than subspecifically distinct. Accordingly, P. goldmani should stand as Peromyscus merriami goldmani. This arrangement is made with the knowledge that Burt (Misc. Publ. Mus. Zool., Univ. Michigan, 39:56, February 15, 1938) arranged P. goldmani as a synonym of Peromyscus eremicus.

~Peromyscus truei preblei~ Bailey

Osgood (N. Amer. Fauna, 28: 171, April 17, 1909) listed two specimens from Crooked River, 25 miles southeast of Prineville, Oregon, as Peromyscus truei gilberti with the notation "approaching truei?" Subsequently, Bailey (N. Amer. Fauna, 55: 188, August 29, 1936) named Peromyscus truei preblei with type locality at Crooked River, 20 miles southeast of Prineville, a place from which Bailey had two specimens. We think the specimens recorded by the two authors are the same, and, according to the specimen labels, were placed correctly as to locality by Bailey. Our reasons are as follows: (a) The specimens mentioned by Bailey were presumably available to Osgood, but Osgood made no mention of specimens from "20 miles southeast of Prineville," (b) we find no specimens nor other records pertaining thereto, of Peromyscus truei from the locality given by Osgood, (c) Osgood indicated that the specimens he saw were not typical of P. t. gilberti and (d) P. m. gilberti, geographically the nearest subspecies, is recorded otherwise no closer to Prineville than Grants Pass, approximately 175 miles southwest in southwestern Oregon.

~Sigmodon hispidus cienegae~ A. B. Howell

J. A. Allen (Bull. Amer. Mus. Nat. Hist., 5:28, March 16, 1893) listed as Sigmodon hispidus arizonae Mearns one specimen from Granados, Sonora, at a time when S. h. cienegae had not been named. We have examined the specimen (5389 AMNH) which has the skull inside and which lacks external measurements. It was taken on November 16, 1890, and is darker than specimens of S. h. arizonae collected in September at Fort Verde, Arizona. The color is essentially as in specimens of S. h. cienegae from Fairbank, Arizona (March-taken specimens). Because of this agreement in color and because of the geographic origin of the specimen from Granados, we refer the animal to Sigmodon hispidus cienegae.

~Sigmodon hispidus zanjonensis~ Goodwin

Goodwin (Bull. Amer. Mus. Nat. Hist., 79:169, May 29, 1942) listed four specimens from Honduras (El Jaral, 2; and Las Ventanas, 2) as Sigmodon hispidus saturatus Bailey. Because these localities fall within the geographic range of S. h. zanjonensis we were lead to examine the specimens. Three are young and one (126113 AMNH from Las Ventanas) is an adult female. The underparts of the young are washed with rufous as in S. h. saturatus. The adult lacks this rufous as do specimens of S. h. zanjonensis and some specimens of S. h. saturatus. In the adult the color of the upper parts and size of the upper cheek-teeth are intermediate between the dark-backed, small-toothed S. h. saturatus and the paler-backed, large-toothed S. h. zanjonensis. The rostrum is intermediate in width but definitely nearer the broad condition which obtains in S. h. saturatus. The tail is long, actually and in relation to the body (total length 275, tail 130), as in S. h. zanjonensis to which we refer the specimens in question.

~Oryzomys couesi couesi~ (Alston)

For alleged occurrence at Reforma in Oaxaca, Mexico (Goldman, N. Amer. Fauna, 43:31, September 23, 1918), see under Oryzomys couesi mexicanus Allen.

~Oryzomys couesi mexicanus~ J. A. Allen

Goldman (N. Amer. Fauna, 43, September 23, 1918) listed, as in the Field Museum of Natural History [= Chicago Natural History Museum] one specimen from Reforma, Oaxaca, under O. c. mexicanus (p. 35) and one specimen from the same place under O. c. couesi (p. 31). In the Chicago Natural History Museum we can find only one specimen. It is a young male, skull with skin, in which the last molar has not yet erupted, and bears the catalogue number 13654. It is, in our opinion, referable to O. c. mexicanus. Because we suspect that Goldman (op. cit.) by error listed this one specimen twice (once under O. c. couesi and once under O. c. mexicanus) it seems best to exclude Reforma, Oaxaca, from the geographic range of O. c. couesi.

~Oryzomys alfaroi saturatior~ Merriam

A series of Oryzomys alfaroi in the U. S. Biological Surveys Collection obtained at Tumbala, 5000 ft., Chiapas, Mexico, the type locality of Oryzomys alfaroi saturatior, contains individuals some of which Goldman (N. Amer. Fauna, 43:66, September 23, 1918) referred to the subspecies O. a. saturatior and one which he referred to O. a. palatinus. This latter specimen, to judge from the external measurements given by Goldman (loc. cit.), is No. 76328. In comparison with the other material which Goldman saw, we find the specimen to agree with O. a. palatinus in pale color and posterior concavity of the posterior border of the palate. In some other diagnostic cranial characters, it is indistinguishable from specimens of O. a. saturatior from the same locality, and in other characters, notably the slenderness of the rostrum, it is intermediate between the two subspecies concerned. In short, although we see the reasons for Goldman's subspecific identification of this individual, we think, in view of the structural intermediacy of the animal and the characters of the series en masse, that it is best referred to Oryzomys alfaroi saturatior.

~Zapus princeps idahoensis~ Davis

Preble (N. Amer. Fauna, 15:23, August 8, 1899) referred two specimens from Henry House and three from 15 miles south of Henry House, both localities in Alberta, Canada, to the subspecies Zapus princeps princeps. Subsequently, when Z. p. kootenayensis (Anderson, Nat. Mus. Canada, Ann. Rept. 1931, p. 108, November 24, 1932) and Z. p. idahoensis (Davis, Jour. Mamm., 15(3):221, August 10, 1934) were named, no mention was made of these specimens although the ranges assigned to Z. p. kootenayensis and Z. p. idahoensis seemed to isolate the Henry House area from the remainder of the range (as recorded) of Z. p. princeps. We have examined the pertinent specimens in the U. S. Biological Surveys Collection (75452 and 75453 from Henry House; 81509-81510 from 15 mi. S Henry House). On the basis of paler color, reduced lateral line, smaller skull, shorter palatal bridge and zygomatic arches, they are, among named subspecies, best referred to Zapus princeps idahoensis.